Objective: To asses the degree of erythrocyte aggregation in the peripheral blood of women with preterm premature rupture of the membranes (PPROM).
Study Design: This was a prospective case control study. Twenty patients with preterm premature rupture of the membranes and matched controls were recruited at the Lis Maternity Hospital. A slide test and image analysis were used to quantitate the degree of erythrocyte aggregation. Hematological indices and markers of inflammation such as the erythrocyte sedimentation rate and C-reactive protein were also compared.
Results: The vacuum radius (VR) of the study group was significantly higher than in the control group at 14.8+/-1.6 microm versus 10.0+/-1.0 microm, respectively (P=0.03). Other hematological indices were not changed significantly between the groups.
Conclusions: We found an increase in erythrocyte aggregation in the peripheral blood of patients with preterm premature rupture of the membranes. We used this sensitive marker of inflammation to further support the theory that PPROM is an inflammatory state.
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http://dx.doi.org/10.1016/j.ejogrb.2005.06.037 | DOI Listing |
Anal Chem
January 2025
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, Republic of Korea.
Electrochemical impedance spectroscopy has great potential for laboratory blood tests. The overall aim of this study is to develop a microfluidic sensor for determining the physical properties and hematological parameters of blood based on its dielectric spectra. Impedance was measured in flowing blood to prevent aggregation and sedimentation at frequencies between 40 Hz and 110 MHz.
View Article and Find Full Text PDFJ Trauma Acute Care Surg
February 2025
From the Department of Surgery, University of Cincinnati, Cincinnati, Ohio.
Background: Red blood cell (RBC) aggregation can be initiated by calcium and tissue factor, which may independently contribute to microvascular and macrovascular thrombosis after injury and transfusion. Previous studies have demonstrated that increased blood storage duration may contribute to thrombotic events. The aims of this study were to first determine the effect of blood product components, age, and hematocrit (HCT) on the aggregability of RBCs, followed by measurement of RBC aggregability in two specific injury models including traumatic brain injury (TBI) and hemorrhagic shock.
View Article and Find Full Text PDFJ Control Release
December 2024
Jiangsu Key Laboratory of Neuropsychiatric Diseases Research, College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China; Jiangsu Province Engineering Research Center of Precision Diagnostics and Therapeutics Development, Soochow University, Suzhou 215123, China. Electronic address:
Many brain-targeting drug delivery strategies have been reported to permeate the blood-brain barrier (BBB) via hijacking receptor-mediated transport. However, these receptor-based strategies could mediate whole-brain BBB crossing due to the wide intracranial expression of target receptors and lead to unwanted accumulation and side effects on healthy brain tissues. Inspired by brain metastatic processes and the selectivity of brain metastatic cancer cells for the inflammatory BBB, a biomimetic nanoparticle was developed by coating drug-loaded core with the inflammatory BBB-seeking erythrocyte-brain metastatic hybrid membrane, which can resist homotypic aggregation and specially bind and permeate the inflammatory BBB for specific drug delivery.
View Article and Find Full Text PDFInt J Pharm
December 2024
School of Pharmacy, Jiangsu University, Zhenjiang, Jiangsu 212013, PR China. Electronic address:
Alzheimer's disease (AD) is a neurodegenerative disease that is significantly characterized by cognitive and memory impairments, which worsen significantly with age. In the late stages of AD, metal ion disorders and an imbalance of reactive oxygen species (ROS) levels occur in the brain microenvironment, which causes abnormal aggregation of β-amyloid (Aβ), leading to a significant worsening of the AD symptoms. Therefore, we designed a composite nanomaterial of macrophage membranes-encapsulated Prussian blue nanoparticles (PB NPs/MM).
View Article and Find Full Text PDFNeurologia (Engl Ed)
January 2025
Servicio de Neurología, Hospital Universitario Navarra, Pamplona, Navarra, Spain; RICORS-ICTUS, ISCIII, Madrid, Spain.
Introduction: Since mechanical thrombectomy has allowed ischaemic stroke thrombus retrieval, the exhaustive study of this material has enabled better understanding of the potential physiopathological processes involved in thrombus formation.
Development: Thrombotic pathways involved in the different vascular beds share common mechanisms, causing difficulties in the identification of specific patterns associated with stroke aetiology. However, other factors such as clot formation time, associated inflammatory status, or activation of additional immune and coagulation pathways (neutrophil extracellular trap [NET] delivery, platelet aggregation, endothelial activation, and von Willebrand Factor release) have been described as determinants in thrombus characteristics.
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